Extrusion for a building structure



FIG. 1 is a perspective view of the first embodiment of an extrusion for a building structure, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a perspective view of the second embodiment of the extrusion for a building structure, showing my new design;

FIG. 9 is a front view thereof;

FIG. 10 is a back view thereof;

FIG. 11 is a left side view thereof;

FIG. 12 is a right side view thereof;

FIG. 13 is a top view thereof;

FIG. 14 is a bottom view thereof;

FIG. 15 is a perspective view of the third embodiment of the extrusion for a building structure, showing my new design;

FIG. 16 is a front view thereof;

FIG. 17 is a back view thereof;

FIG. 18 is a left side view thereof;

FIG. 19 is a right side view thereof;

FIG. 20 is a top view thereof; and,

FIG. 21 is a bottom view thereof. 

CLAIM The ornamental design for an extrusion for a building structure, as shown and described. 